Duffel bag



FIG. 1 is a front perspective view of a duffel bag showing our new design with the internal elements in a downward configuration;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a front perspective view of the duffel bag of FIGS. 1-4 showing the internal elements in an upright configuration;

FIG. 6 is a rear perspective view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a rear view thereof.

The broken lines showing portions of the duffel bag, including stitching, form no part of the claimed design. 

CLAIM The ornamental design for a duffel bag, as shown and described. 